My SR fuses are absolutely directional. As to most of my cabling, it becomes directional with use, with ICs marked on one end so that it is always inserted in the same direction.
As to CD transports, I guess I'm lazy and prefer my one piece EAR Acute player with upgraded NOS tubes and superior cabling. It sounds analog like, great bass, dynamic range and smooth highs. The mids sound just like a good LP.
I've always heard that the superior transports extract more information off he CD. Until I have a split system of transport and DAC, I won't know how much better CDs can sound.